Author George R.R. Martin moderating a panel for the HBO series "Game of Thrones," which is based on the first book of his fantasy series, "A Song of Ice and Fire," at Comic-Con 2011, July 21, 2011, in San Diego.

Stan Lee, left, and Chris Evans are seen at the LMT Music Lodge during Comic-Con 2011 on Thursday July 21, 2011,

Credit: Katy Winn

Actor Chris Evans, who stars in Paramount Pictures and Marvel's "Captain America: The First Avenger," speaks to journalists before a showing of the movie during Comic-Con 2011, July 21, 2011, in San Diego.

John Favreau, director of the upcoming movie, "Cowboys and Aliens," right, walks off stage with director Guillermo Del Toro, left, after the Entertainment Weekly panel during Comic Con Thursday, July 21, 2011, in San Diego.

Kristen Stewart, left, and Robert Pattinson talk during a panel for their film "The Twilight Saga: Breaking the Dawn Part 1" at the Comic-Con International 2011 convention in San Diego Thursday, July 21, 2011. The annual comic book and popular arts convention attracts over 100,000 people and runs through Sunday.

Actress Kristen Stewart arrives for an event at the Comic-Con International 2011 convention held for her film "The Twilight Saga: Breaking the Dawn Part 1" in San Diego Thursday, July 21, 2011. The annual comic book and popular arts convention attracts over 100,000 people and runs through Sunday.